html, body {
	padding: 0;
	margin: 0;
	position: relative;
	overflow: hidden;
	height: 100%;
}
body {
    width: 100%;
    background: #000;
}

/*banner内容*/
.banner_box {
    height: 100%;
    position: relative;
    overflow: hidden;
}

.banner_list {
    position: relative;
    height: 100%;
}

.page_box, .bg_box {
    position: absolute;
    width: 100%;
    height: 100%;
}

.bg_box {
    background-position: center center;
    background-repeat: no-repeat;
}

.page_box .main_box {
    position: relative;
    height: 100%;
}

.banner_list .show {
    left: 0;
}

.banner_list .show .main_box {
    left: 0;
}

.banner_list img {
    position: absolute;
    border: 0;
}

/*下banner导航*/
.product_btns {
    position: absolute;
    width: 100%;
    bottom: 5px;
    z-index: 6;
    transition: bottom .3s;
    -webkit-transition: bottom .3s;
    z-index: 10;
}

.product_btns.show {
    bottom: 100px;
}

.product_btns .content {
    width: 1000px;
    position: absolute;
    bottom: 0;
    left: 50%;
    margin-left: -500px;
}

.product_btns .btns_box {
    margin: auto;
}

.product_btns .btns_box a {
    display: inline-block;
    position: relative;
    background-size: auto;
}

.product_btns .icon_bg {
    background: url(icon_big_1.png);
}

.product_btns .icon_show {
    background: url(icon_big.png);
}
.product_btns a {
    outline: none;
    text-decoration: none;
    transition: color .3s,opacity .3s,transform .3s;
    -webkit-transition: color .3s,opacity .3s,transform .3s;
}
.product_btns a:hover {
    outline: none;
    text-decoration: underline;
}

/*big size*/
.big_view .product_btns .content {
    height: 82px;
}

.big_view .product_btns .btns_box {
    width: 500px;
    height: 84px;
}

.big_view .product_btns .btns_box a {
    width: 90px;
    height: 72px;
    margin: 0 15px;
}

/*mid size*/
.mid_view .product_btns .content {
    height: 58px;
}

.mid_view .product_btns .btns_box {
    height: 58px;
    width: 388px;
}

.mid_view .product_btns .btns_box a {
    width: 70px;
    height: 56px;
    margin: 0 12px;
    background-size: 70px 56px;
}

/*small size*/
.small_view .product_btns .content {
    height: 42px;
}

.small_view .product_btns .btns_box {
    height: 42px;
    width: 292px;
}

.small_view .product_btns .btns_box a {
    width: 50px;
    height: 40px;
    margin: 0 10px;
    background-size: 50px 40px;
}